rockchip: mmc: get the fifo mode and fifo depth property from dts
rk3036 mmc do not have internal dma, so we use fifo mode when read
and write data, we get the fifo mode and fifo depth property from
dts, pass to dw_mmc driver.
Signed-off-by: Lin Huang <hl@rock-chips.com>
diff --git a/drivers/mmc/rockchip_dw_mmc.c b/drivers/mmc/rockchip_dw_mmc.c
index dfe20f9..aeaec6c 100644
--- a/drivers/mmc/rockchip_dw_mmc.c
+++ b/drivers/mmc/rockchip_dw_mmc.c
@@ -64,6 +64,7 @@
struct dwmci_host *host = &priv->host;
u32 minmax[2];
int ret;
+ int fifo_depth;
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
if (IS_ERR(priv->grf))
@@ -72,10 +73,22 @@
if (ret)
return ret;
- ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset,
- "clock-freq-min-max", minmax, 2);
- if (!ret)
- ret = add_dwmci(host, minmax[1], minmax[0]);
+ if (fdtdec_get_int_array(gd->fdt_blob, dev->of_offset,
+ "clock-freq-min-max", minmax, 2))
+ return -EINVAL;
+
+ fifo_depth = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
+ "fifo-depth", 0);
+ if (fifo_depth < 0)
+ return -EINVAL;
+
+ host->fifoth_val = MSIZE(0x2) |
+ RX_WMARK(fifo_depth / 2 - 1) | TX_WMARK(fifo_depth / 2);
+
+ if (fdtdec_get_bool(gd->fdt_blob, dev->of_offset, "fifo-mode"))
+ host->fifo_mode = true;
+
+ ret = add_dwmci(host, minmax[1], minmax[0]);
if (ret)
return ret;